 | Robert Simson - 1762 - 466 σελίδες
...Book!. Let the ftraight line AB make with CD, upon one fide of it, the Vxv^ angles CBA, ABP ; thefe are either two right angles, or are together equal to two right angles. a. Def. 10. For if the angle CBA be equal to ABD, each of them is a right ^ E ri Ax. di Ax. B B angle.... | |
 | Joseph Fenn - 1769 - 536 σελίδες
...PROPOSITION XIII. THEOREM FI. HF angles which one ftraight line FC makes with another AB upon pre fide of it, are either two right angles, or are together equal to two right angles. Hypothefis. Thefis. EC is aßraight line meeting I. Either each of У ACE, ECB, is a L.. AB in the... | |
 | Robert Simson - 1775 - 520 σελίδες
...t. Book I. Let the ftraight line AB make with CD, upon one fide, of it, the angles CBA, ABD ; thefe are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a. A A i. Ax. a Def. to. r;ght » angle ; but,... | |
 | John Playfair - 1795 - 444 σελίδες
...PROP. XIII. THEO R. THE angles which one ftraight line makes with. another upon the one fide of it, arc either two right angles, or are together equal to two right angles. . Let the ftraight line AB make with CD, Upo-1 one fide of ui the angles CBA, ABD ; thefe ar. euher... | |
 | Alexander Ingram - 1799 - 351 σελίδες
...done. PROP. XIII. THEOR. THE angles which one ftraight line makes with another upon the one fide of it, are either two right angles, or are together equal to two right angles. Let the flraight line AB make with CD, upon one- fide of it, the a 5.Poft. b i0. i. BooK I. the angles... | |
 | Robert Simson - 1804
...angles. Poft Let the ftraight line AB make with CD, upon one fide of it* the angles CBA, ABD ; thefe are either two right angles, or are together equal to two right angles. a. Def. 10. For if the angle CBA be equal to ABD, each of them is a right • AE b. it. I. c. 2. Ax.... | |
 | John Playfair - 1804 - 470 σελίδες
...PROB. XIII. THEO R. THE angles which one ftraight line makes with another upon the one fide of" it, are either two right angles, or are together equal to two right angles. Let the ftraight line AB make with CD, upon one fide of it, the angles CBA, ABD ; thefe are either... | |
 | Euclides - 1816 - 528 σελίδες
...I.. Let the straight line AB make with CD, upon one side v-*"V-' of it, the angles CBA> ABD : these are either two right angles, or are together equal to two right angles. • * For if the angle CB A be equal to ABD, each of them is a % A ' E DB D B C 1 Def. 10. right4 angle;... | |
 | Euclid, John Playfair - 1819 - 348 σελίδες
...done. PROP. XIII. THEOR. The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make witK CD, upon one side of it, the angles CBA, ABD ; these are either... | |
 | Euclides - 1821 - 294 σελίδες
...former (per 8th ) PROP. 13, THEOR. WTten a right line standing upon another makes angles with it, they are either two right angles or are together equal to two right angles, If the right line standing on the other be perpendicular to it, the angles are both right ; if not,... | |
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The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles. 
